If a wireless adapter (which contains the charging circuitry) is detected as being attached to the tablet then create a new battery interface and update its status as data is reported. Also destroy the battery if the adapter goes away.
Signed-off-by: Jason Gerecke <[email protected]> --- drivers/hid/wacom_wac.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c index 5d57fec..f1e53f1 100644 --- a/drivers/hid/wacom_wac.c +++ b/drivers/hid/wacom_wac.c @@ -1952,6 +1952,7 @@ static int wacom_wireless_irq(struct wacom_wac *wacom, size_t len) static int wacom_status_irq(struct wacom_wac *wacom_wac, size_t len) { + struct wacom *wacom = container_of(wacom_wac, struct wacom, wacom_wac); struct wacom_features *features = &wacom_wac->features; unsigned char *data = wacom_wac->data; @@ -1965,6 +1966,30 @@ static int wacom_status_irq(struct wacom_wac *wacom_wac, size_t len) SW_MUTE_DEVICE, data[8] & 0x40); input_sync(wacom_wac->shared->touch_input); } + + if (data[9] & 0x02) { /* wireless module is attached */ + int battery = (data[8] & 0x3f) * 100 / 31; + bool ps_connected = !!(data[8] & 0x80); + bool charging = ps_connected && + wacom_wac->battery_capacity < 100; + + wacom_notify_battery(wacom_wac, battery, charging, + ps_connected); + + if (!wacom->battery.dev && + !(features->quirks & WACOM_QUIRK_BATTERY)) { + features->quirks |= WACOM_QUIRK_BATTERY; + INIT_WORK(&wacom->work, wacom_battery_work); + wacom_schedule_work(wacom_wac); + } + } + else if ((features->quirks & WACOM_QUIRK_BATTERY) && + wacom->battery.dev) { + features->quirks &= ~WACOM_QUIRK_BATTERY; + INIT_WORK(&wacom->work, wacom_battery_work); + wacom_schedule_work(wacom_wac); + wacom_notify_battery(wacom_wac, 0, 0, 0); + } return 0; } -- 2.3.0 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
